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Yea after looking at it it seems like removing that regulator would be a little beyond my skill level so i think ill just leave the regulator. 2 steps of 3.3v regulation, if the main regulator fails i guess i have a backup lol. Thanks for the help.

Im working on upgrading a project i made using the Teensy 3.6 design to the Teensy 4.0 design. What i was going to remove to simplify the design is almost exactly the same except for the power regulator enable pin. My plan was the swap out the regulator for one which you can draw more current...

I reflowed the whole chip and it worked 😎. I think my solder paste is to old and is making bad connections. I probably should have just tried that in the first place.

So did did the test and it does the exact opposite, when i haven't clicked program its at about 0.4V but when i click it it goes up to 3.2V. This is very strange.

Yes, i'm going to do that also.

Ok, i will try to see if i can read the reset pin, it's a little hard to get a connection to it since it's a small chip. If all else fails i know someone who has a scope and fancy test equipment so i can see what's going on.

Iv tried a different computer and reflowing a bit more, but still no luck.

Reflowed and went over the pins with a soldering iron and it's now outputting 3.2V on the switch but still no usb connection, i'm going to see if maybe its a computer problem also.

Ok, ill try re flowing it and see if its getting the right amount of power.

I did the test again while connected usb and im getting like 0.5 volts on that pin now for some reason.

I assembled it myself. I got 2 of the bootloader chips, so i tried putting the other one but no luck. Could it have somehow erased on start up? Got all the parts from digikey except the boot.

It said on the crystal guidelines for the bootloader that i would only need crystal capacitors if my crystal was rated to 18pF the one i'm using (this) only has 10 pF.

Yes it looks like it was the T3 version.

It seems like the bootloader isn't responding, nothing happens when i click the program button, the voltage level also doesn't go completely low.

I have been working on a custom project that uses the Teensy 3.6 schematic, the problem im having is that it doesn't show up on usb, i measured the voltage level of pin 10 on the MKL02, the one connected to the button and im only getting about 0.2 volts, i read to measure this on another post...

Have you tried running it on an arduino?

I have been working on a model rocket flight computer based off of the Teensy 3.6 and I'm kind of paranoid about weather it's going to work or not since im pretty much self taught on pcb design. I have removed the 5V regulator, removed the two diodes from the VBAT pin and have powered it...

I realized i posed this in the wrong thread , my bad.

I have been working on a model rocket flight computer based off of the Teensy 3.6 and I'm kind of paranoid about weather it's going to work or not since im pretty much self taught on pcb design. I have removed the 5V regulator, removed the two diodes from the VBAT pin and have powered it...

Im working on a project where i want to use a Teensy 3.6 on a custom pcb. My plan was to change out the MK66FX1MO processor for the MK66FN2M0VLQ18R since the MK66FX1MO has the small hard to solder BGA pins. Looking at the MK66FN2M0VLQ18R's datasheet i noticed it has slightly different pinouts...

It might be more trouble than it's worth since you don't have one, if its not connecting to usb it's probably better just to replace them.

It might just be the 3.3V regulator, but there pretty much isn't a way to replace that easily. I would probably replace those. Have you tried powering it with 3.3v trough vin without the usb connected, and does the board get hot when powered?

Yes, connecting USB while powered without VUSB cut would damage it. Sounds like it may be case if your getting that low voltage on the 3V pin.

Im working on a project where i want to use a Teensy 3.6 on a custom pcb. My plan was to change out the MK66FX1M0VMD18 processor for the MK66FN2M0VLQ18R since the MK66FX1M0VMD18 has the small hard to solder BGA pins. Looking at the MK66FN2M0VLQ18R's datasheet i noticed it has slightly different...

I hooked up a Multimeter and for some reason MISO doesn't go all the way high and CS does not go low at all.

Yup, 3V3 is connected to VIN. MISO = 12 MOSI = 11 SCK = 13 CS = 10

I have been working on a project where i need to data log to a flash chip so, i got the Adafruit XTSD 512M SPI flash chip and tried to use it with a Teensy 4.0, but the card failed to initialize. I have been trying a lot of things but i just can't get it to work, i have been just trying to get...